On his web page he has over 27 small single user puzzle games which are freely available under the MIT license http://www.chiark.greenend.org.uk/~sgtatham/puzzles/doc/licence.html#lic...
http://www.chiark.greenend.org.uk/~sgtatham/puzzles/ this is where the games are located.
And I believe these games dont leave any settings behind or require and files from the HD.
something like this?
"What about Love?" - "Overrated. Biochemically no different than eating large quantities of chocolate." - Al Pacino in The Devils Advocate
Dammit I even searched first for his name...
But please keep the language to a minimum.
Release Team Member